| 扬子地块西北缘二叠系-中三叠统层序地层与沉积相展布 |
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| 引用本文： | 魏国齐,杨威,万怡平,金惠.扬子地块西北缘二叠系-中三叠统层序地层与沉积相展布[J].岩石学报,2011,27(3):741-748. |
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| 作者姓名： | 魏国齐 杨威 万怡平 金惠 |
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| 作者单位： | 中国石油勘探开发研究院廊坊分院,廊坊,065007 |
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| 基金项目： | 本文受"十一五"国家重大专项(2008ZX05007-002)资助. |
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| 摘 要： | 扬子地块西北缘二叠系-中三叠统以大套碳酸盐岩地层为主。本文应用碳酸盐岩层序地层学理论和方法,通过地震、露头、岩心和测井资料分析,在二叠系-中三叠统识别出升隆侵蚀不整合面、海侵上超层序不整合面、水下沉积间断层序不整合面、局部暴露层序不整合面等4种沉积层序界面,并将二叠系-中三叠统划分为11个三级层序23个体系域。通过层序地层对比,建立了研究区层序地层格架,在格架内分析了不同体系域的沉积相特征,认为台缘礁滩相和台内滩相为有利储集相带,且前者主要发育于层序Ⅰ的高位体系域(栖霞组),以及层序Ⅴ和层序Ⅵ的海浸体系域(长兴组和飞仙关组)。
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| 关 键 词： | 碳酸盐岩 层序地层 沉积相 二叠系-中三叠统 扬子地块西北缘 台缘礁滩 |
| 收稿时间： | 2011/1/10 0:00:00 |
| 修稿时间： | 2011/2/14 0:00:00 |
Stratigraphic sequence and sedimentary facies distribution of the Permian-Middle Triassic in the northwestern margin of the Yangtze block. |
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| WEI GuoQi,YANG Wei,WAN YiPing and JIN Hui.Stratigraphic sequence and sedimentary facies distribution of the Permian-Middle Triassic in the northwestern margin of the Yangtze block.[J].Acta Petrologica Sinica,2011,27(3):741-748. |
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| Authors: | WEI GuoQi YANG Wei WAN YiPing and JIN Hui |
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| Institution: | Langfang Branch of the Research Institute of Petroleum Exploration & Development, PetroChina, Langfang 065007, China;Langfang Branch of the Research Institute of Petroleum Exploration & Development, PetroChina, Langfang 065007, China;Langfang Branch of the Research Institute of Petroleum Exploration & Development, PetroChina, Langfang 065007, China;Langfang Branch of the Research Institute of Petroleum Exploration & Development, PetroChina, Langfang 065007, China |
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| Abstract: | The Permian-Middle Triassic is mainly composed of carbonate rocks in the northwestern margin of the Yangtze block. In this paper, based on the application of theories and methods of carbonate sequence stratigraphy and the analysis of seismic data, outcrop, drill core and log information, we identify in the Permian-Middle Triassic strata four depositional sequence surfaces, i.e., erosional unconformity, transgression onlap sequence unconformity, subaqueous depositional break sequence unconformity and local e... |
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| Keywords: | Carbonate rocks Sequence Stratigraphy Sedimentary facies Permian-Middle Triassic Northwestern margin of the Yangtze block Platform edge reef and beach facies |
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